19 research outputs found

    关于等幂和问题

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    关于幂和问题的进一步研究

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    奇数情形Goldbach问题研究

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    Dataset for "A Statistical Study on the Acceleration Conditions of Ultrarelativistic Electrons in the Earth’s Outer Radiation Belt During Geomagnetic Storms"

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    This is the dataset used to produce figures for the paper under review with the title of "A Statistical Study on the Acceleration Conditions of Ultrarelativistic Electrons in the Earth’s Outer Radiation Belt During Geomagnetic Storms"</p

    一种基于精细有限元模型的螺纹连接结构数值方法研究

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    秸秆类生物质发酵法生物产氢的研究

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    Synthesis kinetics of isoamyl acetate catalysized using activated charcoal loaded H_3PO_(40)W_(12)·xH_2O

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    以活性炭吸附磷钨酸水合物作催化剂催化合成乙酸异戊酯,在优化条件下,消除内外扩散,研究乙酸浓度与时间的变化关系,建立酯化反应的表观动力学模型,并对模型进行验证。结果表明,常压下,在实验条件范围内,该酯化反应为二级反应,活化能为Ea=31.20 kJ/mol,指前因子k0=114.43 L/(mol.min),动力学模型计算结果与实际测定结果相符合,动力学方程为:r=dCA/dt=114.43e-31197/RTCACB。Isoamyl acetate was synthesized using activated charcoal loaded H3PO40W12·xH2O as a catalyst.By the elimination of internal and external diffusion,the concentration change of acetic acid with reaction time was determined.Kinetics model of this esterization reaction was investigated and evaluated under the optimized experimental conditions.The results show this esterization is a second-order reaction,with a Ea=31.20 kJ/mol,k0=114.43 L/(mol·min).Calculated values agreed with experimental values well.The kinetics equation is:r=dCA/dt=114.43e-31197/RTCACB国家自然科学基金项目(20566003); 广西民族大学重大项目(2008ZD012); 广西科学研究与技术开发计划应用基础研究专项(桂科基0991005,桂科能0992028-13

    振荡天平结合微反研究程序升温条件下SAPO-34催化的甲醇转化

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    利用结合振荡天平的固定床微反装置,对甲醇转化的气相产物和催化剂相的有机物种沉积进行实时在线监测,由此建立程序升温过程中多相催化甲醇转化完整的碳资源走向图谱
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